Android 自定义适配器中的按钮赢得';Don’别把我带到下一个屏幕
我的自定义Android 自定义适配器中的按钮赢得';Don’别把我带到下一个屏幕,android,eclipse,android-intent,custom-adapter,Android,Eclipse,Android Intent,Custom Adapter,我的自定义适配器中有一个新的Intent。如果点击一个按钮,它会带我进入一个新的屏幕。但是,我不断收到运行时异常 public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_near_me); if (savedInstanceState == null) { getFr
适配器中有一个新的Intent
。如果点击一个按钮,它会带我进入一个新的屏幕。但是,我不断收到运行时异常
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_near_me);
if (savedInstanceState == null) {
getFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View rootView = inflater.inflate(R.layout.fragment_near_me, container, false);
getListAdresses(39, -77);
return rootView;
}
public ArrayList<ArrayList<String>> getListAdresses(double str, double str1)
{
ArrayList<ArrayList<String>> ans = new ArrayList<ArrayList<String>>();
for (int i = 0; i < list.size(); i++)
{
/**
* 10 = lat
* 9 = long
*/
Double dlat = Double.parseDouble(list.get(i).get(10).toString());
Double dlng = Double.parseDouble(list.get(i).get(9).toString());
if ((dlat < (lat + 1) && dlat > (lat - 1))
&& (dlng < (lng + 1) && dlng > (lng - 1)))
{
ans.add(list.get(i));
}
}
return ans;
}
public static class Row
{
String storeName;
String streetAdress;
String location;
String country;
Row(String str1, String str2, String str3, String str4)
{
storeName = str1;
streetAdress = str2;
location = str3;
country = str4;
}
}
public static class CustomAdapter extends BaseAdapter
{
ArrayList<Row> specList;
Context conty;
CustomAdapter(Context c)
{
conty = c;
specList = new ArrayList<Row>();
ArrayList<String> storeName = new ArrayList<String>();
ArrayList<String> streetAdress = new ArrayList<String>();
ArrayList<String> location = new ArrayList<String>();
ArrayList<String> country = new ArrayList<String>();
for (int i = 0; i < ar.size(); i++)
{
storeName.add(ar.get(i).get(0).toString());
streetAdress.add(ar.get(i).get(2).toString());
location.add(ar.get(i).get(3).toString() + ", "
+ ar.get(i).get(4).toString() + " " + ar.get(i).get(5).toString());
country.add(ar.get(i).get(7).toString());
}
for (int i = 0; i < ar.size(); i++)
{
specList.add(new Row(storeName.get(i), streetAdress.get(i),
location.get(i), country.get(i)));
}
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return specList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return specList.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) conty.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rw = inflater.inflate(R.layout.row, parent, false);
TextView name = (TextView) rw.findViewById(R.id.textView1);
TextView adress = (TextView) rw.findViewById(R.id.textView2);
TextView location = (TextView) rw.findViewById(R.id.textView3);
TextView country = (TextView) rw.findViewById(R.id.textView4);
final Row temp = specList.get(position);
name.setText(temp.storeName);
adress.setText(temp.streetAdress);
location.setText(temp.location);
country.setText(" Phone:" + temp.country);
Button call = (Button) rw.findViewById(R.id.button1);
call.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
Uri u = Uri.parse("tel:" + temp.country);
Intent i = new Intent(Intent.ACTION_CALL, u);
rw.getContext().startActivity(i);
}
});
Button map = (Button) rw.findViewById(R.id.button2);
map.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
Intent i = new Intent(rw.getContext(), NearResults.class);
rw.getContext().startActivity(i);
}
});
return rw;
}
这是NearMe的xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.vipar.NearMe$PlaceholderFragment" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
</ListView>
</RelativeLayout>
用于NearResults的xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="90dp"
android:layout_marginTop="161dp"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />
</RelativeLayout>
行的xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView1"
android:text="TextView" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView2"
android:text="TextView" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView3"
android:text="TextView" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/textView4"
android:layout_alignParentRight="true"
android:layout_marginRight="14dp"
android:adjustViewBounds="true"
android:src="@drawable/logo" />
<Button
android:id="@+id/button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView4"
android:text="Call" />
<Button
android:id="@+id/button2"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button1"
android:layout_alignBottom="@+id/button1"
android:layout_alignRight="@+id/imageView1"
android:text="Map It" />
</RelativeLayout>
问题在于您没有检查单击事件是否来自正确的视图。
尝试这样做:
Button map = (Button) rw.findViewById(R.id.button2);
map.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(v.getId() == R.id.button2) {
Intent i = new Intent(Your_Activity_Name.this, NearResults.class);
startActivity(i);
}
}
});
更新(2):在activity_near_me.xml中没有id等于“container”的布局/视图组。将行“android:id=“@+id/container”添加到包含片段的布局中
更新:我认为您的问题与有关,但如果不了解您如何在“活动”中设置视图层次结构以及如何添加片段,我就说不出来了。您可以发布日志cat吗。我使用logcatpost更新了它所有代码占位符片段请同时添加将片段添加到层次结构中的代码(可能在activity.on create()中)onCreate()很简单:public void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_near__me);if(savedInstanceState==null){getFragmentManager().beginTransaction().add(R.id.container,new PlaceholderFragment()).commit();}你不能在适配器内调用getApplicationContext仍然强制关闭,你是对的。我复制并粘贴了我的代码。我会解决这个问题。这个代码毫无意义。如果OnClickListener
只分配给一个按钮,你为什么要检查id?我的错。我以为我在这里更改了。但不,我不检查IDSFOrce以相同的答案结束回答问题可能是在某些XML中。请发布布局我包括了我的oncreate方法,该方法接受片段。查看继承者是Home->NearMe->NearResults。NearMe使用行创建CustomAdapter并用它填充NearMe中的listview。好的,我开始理解您的情况。NearMe是XML吗你粘贴了activity_near_me.xml或fragment_near_me.xml?我想你忘了在activity_near_me.xml的视图组(基本上是一个布局)中添加一行类似“android:id=“@+id/container”的内容。你的例外情况基本上是这样的,这就是为什么我要求你粘贴xml的原因。特别是我需要activity_near_me.xml(我不需要其余的)
Button map = (Button) rw.findViewById(R.id.button2);
map.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(v.getId() == R.id.button2) {
Intent i = new Intent(Your_Activity_Name.this, NearResults.class);
startActivity(i);
}
}
});